SETT ATT BESTEMMA LEGET FOR EN VERKTYGSSPETS RELATIVT EN VERKTYGSSLID PA EN NUMERISKT STYRD VERKTYGSMASKIN, SPECIELLT EN SVARV

摘要

A method of determining the position of a tool tip P with respect to a tool slide 22 of a numerically controlled lathe includes the steps of storing in the machine's data memory the co-ordinates of a fixed slide reference point R and the coordinates of a fixed measuring point D; determining the position of the measuring point by means of a sight through which the operator observes the tool, moving the tool slide so that the tool tip coincides with the measuring point and feeding the positional data of the tool slide in this position to the data memory, whereby the position of the tool tip with respect to the tool slide may be determined.